Air Quality Transducer for mixed gas VOC in room housing, with display, with changeover contact, 0-10 V or 4-20 mA

SKU: RL/A

Category: Air Quality

Manufacturer: FuehlerSysteme

0...100% mixed gas VOC
0-10 V, 4-20 mA, changer
automatic re-calibration

Output VOC: 0-10 V, 4-20 mA

0-10 V, 4-20 mA, changer
Supply voltage: 24 V AC/DC
Version: with display

without display

Low stock level

from 265,81 €

incl. 19% VAT , plus

This item has variations. Please select the requested variation.

low", "medium" and "high".

Measurement range VOC:	0-100% (good / bad air quality, referring to the calibration gas)
Accuracy:	±15% FS
Long term stability:	< 15% FS/year at norm load
Sensor:	metal oxide VOC-sensor
Response time (t90):	max. 60 s
Sensor protection:	mounted inside housing
Supply voltage:	24 V AC/DC (±5%)
Current consumption:	max. 60 mA
Analogue output 0-10 V:	3-wire connection, min. load resistance 100 kOhm
Analogue output 4-20 mA:	3-wire connection, max. RLoad(Ohm) = (+Ub - 15 V) / 0,02 A
Alarm output:	1 x potential-free change-over contact, 48 V, 1 A
Switching Hysteresis Relay:	2% FS (without Display), 0,5...5% FS adjustable (with Display)
Electrical connection:	screw terminals max. 1,5 mm²
Display:	optional LCD display with backlight on/off/auto
Automatic calibration:	The automatic VOC calibration takes place every 7 days, this compensates for any drifts and achieves excellent long-term stability. To ensure this function, the device must be supplied with power for at least 7 days without interruption and ventilated with fresh air once for approx. 10 minutes within this period. The automatic calibration can be deactivated if necessary and performed manually.
Running-in time:	1 h
Initial operation:	After switch-on of the device follows a self-test and the tempering, which takes ca. 1 h depending on the environmental conditions. At this time the analogue output drifts from the actual measurement value.
Cable gland:	on the back or housing side (predetermined breaking point)
Housing:	ABS polyman, colour signal white like RAL 9003
Dimensions:	Housing: L 82 x W 82 x H 25 mm
Weight:	ca. 70 g
Protection type:	IP30, IP20 (with display)
Protection class:	III
Working range r.H.:	0...98% r.H. in contaminant-free, non-condensing air
Working temperature:	0...+50°C
Manual calibration:	The manual VOC calibration of the output signal to 1V (zero point) is started by pressing the button on the circuit board (hold down for approx. 5 seconds until the LED flashes). Before that, continuous operation of min. 2 hours with air defined as normal air quality. The LED is deactivated after successful calibration.
Storage temperature:	-20...+50°C
Installation:	on-wall or on flush-mounted box
Approvals:	CE, EAC, RoHS